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Through filling different reinforce materials into the matrix material, it is possible to improve the performance of polymer materials to meet the needs of different engineering areas[1-2].
And now the research of PEEK polymer materials has became a hot topic.
It has been widely used as an important reinforcement of composite materials in many practical engineering fields [10-11].
The reason lies in the lower thermal expansion coefficient of carbon fibers, which restrains thermal expansion of PEEK composite materials.
Journal of Materials Science Vol.30 (13) (1995), P.3501–3508 [9] S.

Sintered materials tend to have low strength and ductility compared to the melted materials due to their low densities [2-4].
Deng: Materials Science and Engineering A 390 (2005), p. 98-112
Chawla: Materials Science and Engineering A308 (2001), p. 180-188
Torralba: Journal of Materials Science and Engineering Vol. 259 Issue 1 (1999), p. 98-104
Fontanari, G Straffelini: Experimental Results and Modeling, Journal of Engineering Materials and Technology Vol. 120 (1998), p. 248-255.

If choosing a big ratio of height to span, although we can enhance the stability of the bridge, long arch rib materials will also increase the bridge cost.
Conversely, if choosing a small ratio of height to span, although short arch rib materials will reduce the bridge cost, the stability of the bridge is decreased.
Journal of Gansu Sciences.
Journal of Constructional Steel Research, vol. 59;.
Journal of Dalian University of Technology.

Science in China Series E: Technological Sciences. 2009,52(3):634-640 [2] P.
Exact second-order estimates for the effective mechanical properties of nonlinear composite materials[J].
On the imperfectly bonded spherical inclusion problem [J].Journal of Applied Mechanics, 1999, 66 (12):839-846
Journal of SanXia university, 2009, 31(3):46-51
[9] Mori T，Tanaka．Average stress in matrix and average elastic energy of materials with misfitting inclusions[J]．Acta Metall，1973,21:571 - 574

Relaxation properties of the Solid Propellant Based on Hydroxyl-Terminated Polybutadiene Zhimin Xiea, Sichi Chenb, Youshan Wangc National Key Laboratory of Science and Technology on Advanced Composites in Special Environment, Center for Composite Materials, Harbin Institute of Technology, Harbin 150001, P.R.
The polymer-based propellant is a typical viscoelastic material.
Two experimental methods, quasi-static extension and dynamic mechanical analysis (DMA), are commonly used to measure the relaxation properties of the viscoelastic materials [3-5].
Journal of Solid Rocket Technology, 2006 29 (3) 190-194.
Some approximate equations useful in the phenomenological treatment of linear viscoelastic data [J].Journal of Colloid Science. 1959 14 (1) 36-48.

Augustynski, Metal oxide photoanodes for solar hydrogen production, Journal of Materials Chemistry, 18(20) (2008) 2298-303
[11] R Van De Krol, Y Liang, J Schoonman, Solar hydrogen production with nanostructured metal oxides, Journal of Materials Chemistry,18(20) (2008) 2311-20
New York: Nova Science, (2000)
Miseki, Heterogeneous photocatalyst materials for water splitting, Chem.
Fierro, "Photocatalytic water splitting under visible Light: concept and materials requirements", Advances in Chemical Engineering, 36 (2009) 111–143

Introduction Nanometer technology changes with each passing day，nanometer material science is also unceasing and progressive.
Nanometer SiO2，as one of nanometer materials，its preparation method emerges continuously，such as Sol–gel technique, the vapor deposition, precursor, intercalation polymerization, and supermolecular self-assembly techniques[1-2].
Now, the high purity spherical nano-silica which is used in our country was almost importation, and its application scope is also extended continuously，such as materials of electronic encapsulation, photonic crystals, catalyst supports, accurate ceramic material, rubber, coating material etc[3].
[2] Guo Cai Xu, Ai Yuan Li, Li De Zhang, Guo Sheng Wu, Xiao You Yuan, Ting Xie, Journal of Applied Polymer Science, Vol. 90, (2003), p.837–840
Journal of Electrostatics, vol. 46, (1999), p. 171

It is becoming a hot topic in functional material field that immobilizing TiO2 thin film on different substrate materials, the glass [1,2], ceramic[3,4], plastic [5,6], and so on.
Starting materials: C16H36O4Ti, HO(CH2)2NH(CH2)2OH, CH3CH2OH (absolute), H2O (distilled) The sol was made from starting materials according to certain proportion.
Starting materials: (NH4)2TiF6, H3BO3, H2O (distilled) The solution was prepared by starting materials according to certain proportion.
Journal of Functional Material, 2002, 33(3): 246-249 [3] Ping Liu, Xinchen Wang, Xianzhi Fu.
Journal of Inorganic Materials, 2000, 15(1): 88-92 [4] Fei He, Huaijun Tang, Wenkuan Zhao.

Materials and Methods Study Area.
Quality assurance and quality control were assessed using duplicates, method blanks and standard reference materials (GBW07401) from Chinese Academy of Measurement Sciences with each batch of samples.
Fig.2 The comparison of heavy metal concentrations in samples Huoshaogou wetland not only received the descent of dust, but also received materials eroded from Westhill and that in wastewater.
Adomako, Biomonitoring in the forest zone of Ghana: the primary results obtained using neutron activation analysis and lichens, International Journal of Environment and Pollution 32 (2008) 467-476
Qiu, The remediation of heavy metals contaminated sediment, Journal of hazardous materials 161 (2009) 633-640

Shrinkage and creep is the inherent properties of concrete material, and the material is developing with time [4].
In order to analyze the effects of shrinkage and creep affecting performance of concrete structure properly, the mathematical models of shrinkage and creep that can reflect the actual situation of materials should be chosen.
Torrenti: Engineering Structures Vol. 27(2005), p. 239 [8] Pietro Giovanni Bocca and Paola Antonaci: Cement and Concrete Research Vol. 35(2005), p. 1776 [9] Di Hu and Zhengqing Chen: China Railway Science Vol. 24(2003), p. 43(In Chinese) [10] Weichen Xue and Wei Wang: Journal of the China Railway Society Vol. 28(2006), p. 93(In Chinese) [11] Zdenek P.
Bazant and Sandeep Baweja: Materials and Structures Vol. 28(1995), p. 357 [12] Zdenek P.
Bazant and Sandeep Baweja: Materials and Structures Vol. 28(1995), p. 415 [13] Zdenek P.